JPS6320015Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a novel bulb mounting structure for a vehicle lamp. Specifically, the present invention aims to provide a novel light bulb mounting structure for a vehicle lamp, which allows a flange-equipped light bulb to be attached to a lamp body with a simple operation.

BACKGROUND TECHNOLOGY AND PROBLEMS A light bulb with a flange formed on the base is often used as a light source in vehicle lighting devices, such as automobile headlights. The mounting structure is complicated and has a large number of parts, resulting in problems such as the complicated operation of mounting the light bulb.

Purpose of the invention Therefore, the present invention solves the above-mentioned problems with the conventional bulb mounting structure of vehicle lights, and makes it possible to attach a flange-equipped light bulb to a lamp body with a simple operation. The purpose of the present invention is to provide a new bulb mounting structure for a vehicle lamp.

Summary of the invention In order to achieve the above-mentioned purpose, the light bulb mounting structure of the vehicle lamp of the present invention consists of a lamp body, a light bulb, and a mounting bracket, and an annular flange that protrudes outward is formed on the base of the light bulb. The lamp body is provided with a mounting tube whose inner diameter is smaller than the outer diameter of the flange of the light bulb and larger than the outer diameter of the portion in front of the flange of the base, and the outer circumferential surface of the mounting tube has a circumferential surface. A fitting groove is formed extending along the direction, and the mounting bracket is formed by bending a band-shaped plate having spring elasticity into an annular shape so that its diameter can be expanded or contracted, and approximately the lower half of one end is cut off. Approximately the upper half of the other end is cut off, and each of the above-mentioned ends is overlapped with the outside of the cut side of the other end, and a knob piece protruding outward is formed at the tip thereof. The present invention is characterized by comprising a fitting portion that fits into a fitting groove of the mounting tube and a holding portion that holds the flange of the light bulb between the fitting portion and the mounting tube.

Therefore, according to the bulb mounting structure of the vehicle lamp of the present invention, the diameter of the mounting bracket is expanded by applying force to the two knob pieces so that they approach each other, and the bulb is attached to the mounting tube of the lamp body. and keep the front side of the flange in contact with the rear end surface of the mounting tube.
Then, remove the force applied to the two knob pieces, reduce the diameter of the mounting bracket, fit the fitting part into the fitting groove of the mounting tube, and press the holding part against the rear surface of the bulb flange. The flange-equipped light bulb can be securely attached to the lamp body just by touching it, making the light bulb installation operation extremely easy. Furthermore, the only part for attaching the light bulb is the mounting bracket, and its structure is simple. It becomes extremely simple.

Embodiments The details of the light bulb mounting structure of the vehicle lamp of the present invention will be described below with reference to illustrated embodiments.

1 is a lamp body, which is a molded product made of synthetic resin such as ABS or FRP. The front opening of the lamp body 1 is covered with a lens 2 made of glass, transparent synthetic resin, or the like. The lamp body 1 is supported by the vehicle body 3 at three points and is tiltable with respect to the vehicle body 3. One of the connecting portions of the lamp body 1 to the vehicle body 3 is a fulcrum-like connecting portion 4, and a sphere 6 integrally formed at the tip of a shaft 5 fixed to the vehicle body 3 is integrally formed on the back surface of the lamp body 1. It is constructed by being fitted into a spherical recess 7. Remaining 2 connecting parts of lamp body 1 to vehicle body 3
The point is an interval adjustment part 8 (only one part is shown in the drawing), and the head 9 is engaged with a connecting piece 10 formed integrally with the lamp body 1, and the tip is connected to a nut 11 fixed to the vehicle body. It consists of an adjusting screw 12 screwed together, and a coil spring 13 which is compressed and inserted into the adjusting screw 12 between the vehicle body 3 and the connecting piece 10.

Reference numeral 14 denotes a mounting tube integrally formed at the rear center of the lamp body 1 so as to protrude rearward, and the inside and outside of the lamp body 1 are communicated through this mounting tube 14. An annular fitting groove 15 is formed on the outer peripheral surface of the mounting tube 14 at a position slightly forward from the rear end. 16, 16 are protrusions formed on the rear surface of the lamp body 1 at positions close to the base of the mounting tube 14, and rear surfaces 17, 17 are protrusions 16
and 16 are formed into sloped surfaces that are higher on opposite end sides.

Incidentally, three positioning protrusions 18, 18, 18 are protruded from the rear end surface of the mounting tube 14 formed on the lamp body 1 at appropriate intervals.

Reference numeral 19 denotes a light bulb for use as a light source, which is composed of a glass bulb 20 in which a filament is enclosed and a base portion 21 that holds the glass bulb 20. The base part 21 is made of an insulating material such as synthetic resin, has a substantially cylindrical shape, and is divided into a light bulb holding part 23 and a connector part 24 by a partition wall 22 provided in the middle part. A glass bulb 20 is placed inside the bulb holder 23.
The base of the connector is fixedly held by a suitable cement, and terminals 25, 25, 2 are provided in the connector part 24.
5 is held, and these terminals 25, 25, 25 are connected to external leads (not shown) led out from the glass bulb 20. A flange 2 protrudes outward from an intermediate position on the outer peripheral surface of the mouthpiece 21.
6 is integrally formed, and three positioning notches 27, 27, 27 are formed at appropriate intervals on the outer peripheral edge of the flange 26. In addition, the formation interval of these positioning notches 27, 27, 27 is as follows.
a positioning protrusion 18 formed on the mounting tube 14;
This corresponds to the formation interval of 18, 18.
Further, an annular fitting groove 28 is formed on the outer circumferential surface of the base portion 21 slightly forward of the position where the flange 26 is formed, and an O-ring 29 is fitted and supported in this fitting groove 28 .

In such a light bulb 19, the glass bulb 20 is inserted into the lamp body 1 from the rear of the mounting tube 14 of the lamp body 1, and the notches 27, 27, 27 formed on the outer peripheral edge of the flange 26 are inserted into the mounting tube 14. 1
The bulb 19 is positioned in the rotational direction by fitting into the protrusions 18, 18, 18 formed on the rear end surface of the flange 26, and the front surface of the flange 26 abuts against the rear end surface of the mounting tube 14. By doing this, the light bulb 19 is positioned in the axial direction.
Further, in this state, the O-ring 29 comes into elastic contact with the inner circumferential surface of the mounting tube 14, and the space between the base portion 21 and the mounting tube 14 is waterproofed.

30 is a mounting bracket made of spring elastic material;
That is, it is formed by bending a strip of leaf spring material into an annular shape so that its diameter can be expanded or contracted. One end 31a of the mounting bracket 30 has its substantially lower half cut off, and the other end 31b has its substantially upper half cut off, thereby preventing the annular shape from being distorted at the overlapping portion of both ends. At the tip of each end 31a, 31b of the mounting bracket 30, knob pieces 32a, 32b are formed so as to project outward.

The mounting bracket 30 has two elongated notches 33, 3.
3 is formed, whereby the formed lower thin band-shaped portions serve as fitting portions 34, 34. Further, the upper end portions of the notches 33, 33 are folded slightly inward obliquely to form elastic holding portions 35, 35.

Note that 36, 36 are reinforcing pieces that protrude from the upper end of the mounting bracket 30 and are slightly bent outward.

Therefore, when no external force is applied to the mounting fitting 30 as described above, its inner diameter is made to be considerably smaller than the outer diameter of the mounting tube 14 of the lamp body 1, and on the other hand, the two knob pieces 32a ,32
When a force is applied to the parts b so as to bring them closer together, the inner diameter of the mounting fitting 30 expands and becomes larger than the outer diameter of the mounting tube 14.

Therefore, the inner diameter of the mounting bracket 30 is expanded to be larger than the outer diameter of the mounting tube 144, and the mounting bracket 30 is fitted onto the mounting tube 14 in that state, and the fitting of the mounting bracket 30 is If the positions of the joints 34, 34 are aligned with the positions of the fitting grooves 15 of the mounting tube 14, and the force applied to the knob pieces 32a, 32b is removed, the mounting bracket 30 will operate to reduce its inner diameter. , the fitting portions 34, 34 are fitted into the fitting groove 15 of the mounting tube 14. At the same time, the holding parts 35, 35 engage with the rear surface of the flange 26 of the light bulb 19 and press it elastically, so that the light bulb 1
The flange 26 of the lamp body 9 is held between the rear end surface of the mounting tube 14 of the lamp body 1 and the holding parts 35, 35 of the mounting bracket 30.

When removing the light bulb 19 attached to the lamp body 1 as described above, force is applied to the knob pieces 32a and 32b of the mounting bracket 30 so that they approach each other. Then, the inner diameter of the mounting bracket 30 expands, the fitting portions 34, 34 are disengaged from the fitting groove 15 of the mounting tube 14, and the knob pieces 32a, 32 are further removed.
b is a protrusion 1 formed on the back surface of the lamp body 1
6 and 16, the mounting bracket 30 naturally moves in a direction away from the mounting tube 14. If you remove the mounting bracket 30 from the mounting tube 14 in this way, you can easily remove the light bulb 1.
9 can be pulled out from the mounting tube 14 of the lamp body 1.

Effects of the invention As is clear from the above description, the light bulb mounting structure of the vehicle light of the present invention consists of a lamp body, a light bulb, and a mounting bracket, and the base of the light bulb has an annular flange projecting outward. The lamp body has a mounting tube protruding from the lamp body, the inner diameter of which is smaller than the outer diameter of the bulb flange and larger than the outer diameter of the portion in front of the flange of the base.
A fitting groove extending along the circumferential direction is formed on the outer peripheral surface of the mounting tube, and the mounting bracket is formed by bending a band-shaped plate having spring elasticity into an annular shape so that its diameter can be expanded or contracted. Approximately the lower half of one end is removed, and approximately the upper half of the other end is removed, and each of the above-mentioned ends is overlapped with the outside of the removed side of the other end, and its tip protrudes outward. The present invention is characterized in that a knob piece is formed, and includes a fitting portion that fits into a fitting groove of the mounting tube and a holding portion that clamps the flange of the light bulb between the fitting tube and the mounting tube.

Therefore, according to the bulb mounting structure of the vehicle lamp of the present invention, the diameter of the mounting bracket is expanded by applying force to the two knob pieces so that they approach each other, and the bulb is attached to the mounting tube of the lamp body. and keep the front of the flange in contact with the rear end surface of the mounting tube.
Then, remove the force applied to the two knob pieces, reduce the diameter of the mounting bracket, fit the fitting part into the fitting groove of the mounting tube, and press the holding part against the rear surface of the bulb flange. The flange-equipped light bulb can be securely attached to the lamp body by just touching it, making the light bulb installation operation extremely easy. Furthermore, the only part for attaching the light bulb is the mounting bracket, and its structure is simple. It becomes extremely simple.

[Brief explanation of the drawing]

The drawings show an example of the light bulb mounting structure of the vehicle lamp according to the present invention.
Figures 4 to 4 show a light bulb, Figure 2 is a side view, Figure 3 is a vertical cross-sectional view, Figure 4 is a front view, and Figures 5 to 8 show the light bulb mounting structure of the vehicle lamp of the present invention. 5 is a longitudinal sectional view, FIG. 6 is a perspective view, FIG. 7 is an exploded perspective view, and FIG. 8 is a perspective view of the mounting bracket with its diameter enlarged. Explanation of symbols, 1... Lamp body, 14... Mounting tube, 15... Fitting groove, 19... Light bulb, 21...
Base part, 26... flange, 30... mounting bracket,
31a...one end, 31b...other end, 32a,
32b...Pinch piece, 34...Fitting part, 35...Press part.

Claims (1)

[Scope of utility model registration request] Consisting of a lamp body, a light bulb, and a mounting bracket, the base of the light bulb is formed with an annular flange that protrudes outward, and the lamp body has an inner diameter smaller than the outer diameter of the flange of the light bulb than the flange of the base. A mounting tube with a larger outer diameter than the front portion is protruded, and a fitting groove extending in the circumferential direction is formed on the outer peripheral surface of the mounting tube. The plate is bent into an annular shape so that its diameter can be expanded or contracted, and at one end, approximately the lower half is cut off, and at the other end, approximately the upper half is cut off, and each of the above-mentioned ends is cut off from the other end. A knob piece is formed on the outer side of the attached side and protrudes outward at the tip thereof, and is connected between the fitting part that fits into the fitting groove of the mounting tube and the mounting tube. A light bulb mounting structure for a vehicle lamp, characterized by having a holding part that clamps the flange of the light bulb.